• Official Name: Chagulak Island
  • Seismically Monitored: No
  • Color Code: UNASSIGNED
  • Alert Level: UNASSIGNED
  • Elevation: 1142m (3746ft)
  • Latitude: 52.5714
  • Longitude: -171.1395
  • Smithsonian VNum: 311200
  • Pronunciation:
  • Nearby Towns:
    • Nikolski 98 mi (158 km) NE
    • Atka 132 mi (212 km) SW
    • Unalaska 211 mi (339 km) NE
    • Adak 237 mi (382 km) SW
    • Akutan 246 mi (396 km) NE


From Wood and Kienle (1990) [1] : "Chagulak is a small stratovolcano separated from Amukta by ~7 km of ocean, but the two coalesce at depth. Chagulak is unstudied; the only geologic information available is a single chemical analysis. A low-potassium, high-alumina basaltic andesite (51% SiO2, 0.59% K2O) was recovered from the north-northwest shore of the island, but the sample's geologic setting is unknown."

Name Origin

The U.S. Coast and Geodetic Survey gave the Unangam Tunuu name "Chagulak" to Chagulak Island in 1931, to avoid repeating the name "Chugul." This island was called "O[strov] Chugula" by Lt. Sarychev (1826) (Orth, 1971).

References Cited

[1] Volcanoes of North America: United States and Canada, 1990

Wood, C. A., and Kienle, Juergen, (eds.), 1990, Volcanoes of North America: United States and Canada: New York, Cambridge University Press, 354 p.

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